CN109946300A - Pipe tobacco resist processing based on image method detects characterizing method - Google Patents
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Abstract
A kind of pipe tobacco resist processing detection characterizing method based on image method, the equal length of pipe tobacco number is measured using machine vision method, it can be respectively used to pipe tobacco wind and send to detect with the pipe tobacco resist processing type of two kinds of processes of roller drying characterize, be sent with pipe tobacco in wind, the variation of the equal length of number characterizes the resist processing of pipe tobacco before and after roller drying process.The present invention has the advantages that characterizing method a) provided can intuitively embody the size of pipe tobacco resist processing；B) mode with image method measurement pipe tobacco characteristic size is efficient, convenient, accurate.The characterizing method of this pipe tobacco resist processing calculates easy, degree of crushing after apparent capable of legibly embodying the processes such as pipe tobacco is sent by wind, roller is processed, to reflect pipe tobacco resist processing ability: representing the resist processing of pipe tobacco with the equal length ratio S of pipe tobacco number before and after process, S is closer to 1, degree of crushing of the pipe tobacco after processing is smaller, and the resist processing of pipe tobacco is stronger；Similarly S shows that pipe tobacco resist processing is poorer more less than 1.
Description
Technical field
The invention belongs to tobacco manufacture fields, and in particular to a kind of pipe tobacco resist processing detection characterization side based on image method
Method.
Background technique
Pipe tobacco is the main constituents of cigarette, and the pipe tobacco process of finished cigarettes mainly includes chopping, sieves, heats
Humidification, cut tobacco be dry, mixes a wire distribution.In tobacco product process of manufacture, the distribution of pipe tobacco size is cigarette process
In the control of product physical quality emphasis, pipe tobacco exist in process it is different degrees of make broken, pipe tobacco makes broken direct shadow
It rings tobacco structure and then influences the physical quality of cigarette, such as causing end tobacco-falling quantity and loose-ends ratio to increase, (" temperature is to finished cut tobacco
The influence of broken rate and even size distribution " Zhao Liang etc.).In recent years, with cigarette industry actual number of equipment and technical level
Raising, the requirement to cigarette quality stability is obviously improved, and influence of the pipe tobacco resist processing problem to cigarette physical characteristic is got over
Come it is bigger, especially show consumption reduction, end tobacco-falling quantity and pipe tobacco whole cut rate change rate etc. (" warming and humidifying roller drying ginseng
The influence of several pairs of cut tobacco resist processing " Tan Rui etc.).Therefore pipe tobacco resist processing affects cigarette quality indirectly, reduces pipe tobacco
Making in process is broken, improves tobacco structure distribution, is the effective way for improving and stablizing cigarette product.In adding for pipe tobacco
During work, especially during pipe tobacco wind is sent with roller drying, pipe tobacco can be crushed gradually because of different external forces, be led
It causes pipe tobacco subsequent handling resist processing poor, influences rolled cigarette effect.
Currently, domestic use with the situation of change of whole cut rate in cigarette processing process the resist processing for reflecting pipe tobacco.
The definition of 2016 editions " cigarette process specification " change rates for defining whole cut rate, it may be assumed that pipe tobacco etc. passes through whole after certain processes
The ratio of silk rate and whole cut rate before, is expressed as a percentage.2016 editions " cigarette process specifications " the 174th are shown in the definition of whole cut rate
Page, annex, the F.4.8 money, the measuring method of whole cut rate are shown in tobacco business standard YC/T178-2003.But utilize the change of whole cut rate
There are some problems come the method that reflects pipe tobacco resist processing for rate: first is that its degree of crushing of the biggish pipe tobacco of tobacco structure difference
It can not be indicated with the variation of whole cut rate；Second is that being affected by human factors in the test operating procedure of existing whole cut rate larger；Third is that
Sampling is difficult, influences pipe tobacco process.
Stifled sturdy pines etc. has invented a kind of method and apparatus (patent name: " a kind of with sieve method measurement crushing degree of tobacco shreds
Method and apparatus for measuring crushing degree of tobacco shreds ", publication number: CN101694435A), this method is a kind of novel by designing
Pipe tobacco crushing device simulates the broken process of pipe tobacco, recycles sieve method to obtain pipe tobacco and is become by the characteristic size before and after device
Law, to characterize pipe tobacco resistant to breakage ability.But sieve method needs to carry out the data measured multi-step data analysis and fitting
The pipe tobacco characteristic length of characterization tobacco structure could be obtained.
In recent years, with the development of optical detection and computer image processing technology, machine vision method is in research layer
Application in face and the fields such as industry, agricultural, medicine, military affairs achieves booming.Such as use of Wang Bin invention
One kind of the method (patent publication No.: CN108072331A) of machine vision metrology Roundness of Workpiece, the inventions such as Jiang Lianzhi is based on machine
Quadrotor flying robot's target lock-on tracking system (patent publication No.: CN108196576A) of device vision.Machine vision side
Method tobacco manufacture field application be concentrated mainly on to raw material selected removal of impurities (such as Liu Yong invention " based on group light combination it is saturating
Depending on leaf in containing stalk and the visual recognition detection method of rate containing stalk ", Authorization Notice No.: CN102339385B) and Morphology observation (such as Zhu
" a kind of based in X-ray transmission image quantitative detection offal slightly the measuring method of stalk rate and length stalk rate " of the inventions such as literary chief,
Publication number: CN108007945A).There is presently no people, and same batch pipe tobacco is quickly and easily measured by machine vision method
The metamorphosis and its characteristic size of front and back are processed, and then judges pipe tobacco resist processing size.
Summary of the invention
The present invention is based on above-mentioned application background and prior art situation, provide it is a kind of characterization pipe tobacco resist processing it is new
Method, it may be assumed that measure the equal length of pipe tobacco number using machine vision method, replace currently used characteristic length (to use with the equal length of number
Sieve is improved quality than measuring pipe tobacco overall dimensions size for pipe tobacco size corresponding to 0.5).It is sent with pipe tobacco in wind, roller drying
Etc. before and after critical processes the variation of the equal length of number characterize the resist processing of pipe tobacco.
Present invention aim to address the pipe tobacco characteristic sizes for being used to characterize pipe tobacco resist processing to be difficult to determining problem.Phase
Than traditional sieve method, this method needs not move through the work such as data analysis and fitting, can be straight using machine visual detection device
It connects to obtain in the inspection equal length of pipe tobacco number, eliminates unnecessary work step, improve operating efficiency.In addition, with quartering
Under the premise of grab sample, the equal length of pipe tobacco number can more reflect the physical features of secondary pipe tobacco by the gross compared to pipe tobacco characteristic length,
So the pipe tobacco resist processing stability measured with this method is higher.
The purpose of the present invention is achieved through the following technical solutions,
A kind of pipe tobacco resist processing detection characterizing method based on image method, can be respectively used to pipe tobacco wind and send and two kinds of roller drying
The pipe tobacco resist processing type of process detects characterization, is sent in wind with pipe tobacco, the variation of the equal length of number characterizes before and after roller drying process
The resist processing of pipe tobacco, the specific steps are as follows:
(1) pipe tobacco wind send process:
(1.1) in air conveying device entrance, take pipe tobacco 100g ~ 800g, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；
(1.2) tobacco sample 8g ~ 20g after quartering water intaking balance-dividing is used for multiple times；
(1.3) by (clamping panel is pipe tobacco imaging system in the discrete sample clamping panel for being laid in detection system of tobacco sample
The objective table of system, Di Weiyi black squares metal decking, Gai Weiyi transparent glass, the discrete tiling of pipe tobacco after sample quarterlies
Glass is covered again after ferrous metal panel, is put into imaging system by track), guarantee that panel is paved with and pipe tobacco is non-overlapping；
(1.4) sample clamping panel, which is put into the imaging viewing field of detection system, is detected (referring to Fig. 1), imaging system (CCD phase
Machine: Charge Coupled Device) image acquisition is carried out automatically；
(1.5) image processing system in computer is handled the image got using image segmentation algorithm, is extracted into
Pipe tobacco skeleton as after:
(1.6) it is promoted as unit of pixel from pipe tobacco one end to the other end, successively by order phase in the long side of skeleton image two sides
Corresponding pixel connects and identifies that the intermediary image vegetarian refreshments for orienting this connecting line, these intermediary image vegetarian refreshments are combined into one
Pipe tobacco shape feature line, width are 1 pixel, and length is n >=5 pixel, and the characteristic curve of n≤4 pixel is considered
Pipe tobacco is made broken, does not detect, the length of the line is pipe tobacco length L；
(1.7) the equal length L of number of tobacco sample before wind is sent is sought as the following formula0a:
(1-1)
In above formula, N is test sample pipe tobacco sum, LiFor the length of i-th pipe tobacco；
(1.8) air conveying device export, take pipe tobacco 100g ~ 800g, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；
(1.9) step (1.2) ~ (1.7) are repeated, the equal length of number of tobacco sample after roller processing is obtained:
(1-2)
In above formula, M is test sample pipe tobacco sum, LjFor the length of jth root pipe tobacco；
(1.10) pipe tobacco resist processing is calculated using following formula:
(1-3)
Wherein: SWindThe resist processing of journey, no unit are passed through by wind for pipe tobacco；L0a、L0bRespectively pipe tobacco passes through journey by wind
The forward and backward equal length of pipe tobacco number, unit mm；
(2) roller drying process:
(2.1) before roller drying, 50 ~ 1000g of pipe tobacco is taken, and balance to moisture content is 11% ~ 13% under constant-temperature constant-humidity environment；
(2.2) (1.2) ~ (1.7) in step (1) are repeated, pipe tobacco sampling amount is changed to 5g ~ 30g after balance, before obtaining roller drying
The equal length of pipe tobacco number:
(1-4)
In above formula, P is test sample pipe tobacco sum, LkFor the length of kth root pipe tobacco；
(2.3) after roller drying, take 50 ~ 1000g of pipe tobacco, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；；
(2.4) (1.2) ~ (1.7) in step (1) are repeated, pipe tobacco sampling amount is changed to 5g ~ 30g after balance, obtains through roller drying
Pipe tobacco length afterwards:
(1-5)
In above formula, R is test sample pipe tobacco sum, LtFor the length of t root pipe tobacco；
(2.5) roller drying process pipe tobacco resist processing is calculated using following formula:
(1-6)
Wherein: SRollerPass through the resist processing of roller processing, no unit for pipe tobacco；L0c、L0dRespectively pipe tobacco is through roller drying mistake
The forward and backward pipe tobacco average length of journey, unit mm.
The present invention has the advantages that characterizing method a) provided can intuitively embody the size of pipe tobacco resist processing；b)
Mode with image method measurement pipe tobacco characteristic size is efficient, convenient, accurate.The characterizing method of this pipe tobacco resist processing calculates letter
Just, the degree of crushing after apparent capable of legibly embodying the processes such as pipe tobacco is sent by wind, roller is processed, so that it is resistance to reflect pipe tobacco
Working ability: S is closer to 1, and degree of crushing of the pipe tobacco after processing is smaller, and the resist processing of pipe tobacco is stronger；Similarly S is smaller
In 1, show that pipe tobacco resist processing is poorer.
Detailed description of the invention
Fig. 1 is image method pipe tobacco detection system schematic illustration.
In Fig. 1: 1. camera, 2. camera lens 3.LED light source, 4. sample clamping device.
Fig. 2 is to calculate pipe tobacco length schematic diagram in figure using iterative algorithm.
Specific embodiment
The principle of the invention and operating process are described further below:
One, pipe tobacco wind passes through journey:
1) it is both needed to sample before and after air conveying device, sampling amount is 100g ~ 800g；
2) pipe tobacco places 48h under constant-temperature constant-humidity environment after sampling, and balance sample moisture content to 11% ~ 13% repeatedly uses quartering
Therefrom take pipe tobacco 8g ~ 20g；
3) as shown in Figure 1, sample clamping device 4 is put into system imaging visual field by guide rail is detected, the LED of imaging system
Light source 3 issues visible light, CCD camera 1(Charge Coupled Device) taking pictures to sample obtains image；
4) quantitative analysis, statistics target and back are carried out to the pipe tobacco pixel in the image of acquisition by Computerized image processing system
The intensity distribution difference of color component between scape has been used based on RGB(Red-Green-Blue Color Model) component difference
Threshold segmentation method be split processing in color of image space, extract target pipe tobacco, while using connected domain detection side
Method judges whether center pixel is on the boundary of connected domain by the gray value of comparison four communicating positions and center pixel, right
Each pipe tobacco target area carries out Skeleton using iterative algorithm, determines pipe tobacco geometry backbone；
5) the imaging pipe tobacco skeleton after extracting as unit of pixel from pipe tobacco one end to the other end as shown in Fig. 2, promoted, successively
The corresponding pixel of order in the long side of skeleton image two sides is connected and identifies the intermediate pixel for orienting this connecting line
Point, these intermediary image vegetarian refreshments are combined into pipe tobacco shape feature line shown in dotted lines in Figure 2, and (width is 1 pixel, length n
>=5 pixels, the characteristic curve of n≤4 pixel are considered that pipe tobacco is made broken, does not detect), the length of the line is single cigarette
Filament length degree L, the length sequences of every pipe tobacco are directly displayed in system windows shown in figure one；
6) the equal length L of pipe tobacco number before wind is sent is sought respectively as the following formula0a, wind send rear pipe tobacco number equal length L0bJourney pipe tobacco is passed through with wind
Resist processing SWind:
(1-1)
(1-2)
(1-3)
Two, roller drying process:
1) it is both needed to sample before and after roller drying device, sampling amount is 50g ~ 1000g；
2) pipe tobacco places 48h under constant-temperature constant-humidity environment after sampling, and balance sample moisture content to 11% ~ 13% repeatedly uses quartering
Therefrom take pipe tobacco 5g ~ 30g；
3) sample clamping device 4 is put into system imaging visual field by guide rail and is detected, and the LED light source 3 of imaging system issues
Visible light, CCD camera 1(Charge Coupled Device) taking pictures to sample obtains image；
4) quantitative analysis, statistics target and back are carried out to the pipe tobacco pixel in the image of acquisition by Computerized image processing system
The intensity distribution difference of color component between scape has used RGB(Red-Green-Blue Color Model) threshold of component difference
Value dividing method is split processing in color of image space, extracts target pipe tobacco, while using connection area detecting method, leading to
The gray value for crossing comparison four communicating positions and center pixel, judges whether center pixel is on the boundary of connected domain, to each
Pipe tobacco target area carries out Skeleton using iterative algorithm, determines pipe tobacco geometry backbone；
5) the imaging pipe tobacco skeleton after extracting as unit of pixel from pipe tobacco one end to the other end as shown in Fig. 2, promoted, successively
The corresponding pixel of order in the long side of skeleton image two sides is connected and identifies the intermediate pixel for orienting this connecting line
Point, these intermediary image vegetarian refreshments are combined into a dotted line, which is pipe tobacco shape feature line, and width is 1 pixel, and length is
N >=5 pixel, the characteristic curve of n≤4 pixel are considered that pipe tobacco is made broken, does not detect, the length of the line is single cigarette
Filament length degree L；
6) the equal length L of number of tobacco sample before roller drying is sought as the following formula0c: the equal length L of pipe tobacco number after roller dryingodAnd rolling
Cylinder drying process pipe tobacco resist processing SRoller:
(1-4)
(1-5)
(1-6)
Embodiment 1:
With a batch of tobacco sample, 200g is therefrom sampled, be divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance,
Every group of 10g；The batch sample pipe tobacco send pipe exit to collect all tobacco sample after wind is sent, in wind, and therefrom sample 200g,
It is divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance, every group of 10g.Use the characterization side of above-mentioned pipe tobacco resist processing
Method rejects pipe tobacco width and is less than 0.6mm, and length range is greater than the pipe tobacco of equal ± 3 б of length of number, statistics every batch of sample pipe tobacco
The equal length L of number before wind is sent0a, wind send after the equal length L of number0b, pipe tobacco resist processing it is as shown in table 1.
1 pipe tobacco wind of table send process resist processing characterization result
Similarly for the batch pipe tobacco, 200g is therefrom sampled, be divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance,
Every group of 10g；The batch sample pipe tobacco send pipe exit to collect all tobacco sample after wind is sent, in wind, and therefrom sample 200g,
It is divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance, every group of 10g.Journey is crushed using pipe tobacco sieve method measurement pipe tobacco
Degree, obtains that the results are shown in Table 2.
2 pipe tobacco wind of table send process degree of crushing sieve method characterization result
Pipe tobacco send the resist processing of process to reduce with the increase of sample pipe tobacco length through wind, the knot that this point is obtained with sieve method
By consistent.
Embodiment 2:
With a batch of tobacco sample, 200g is therefrom sampled, be divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance,
Every group of 15g；The batch sample pipe tobacco collects all tobacco sample in roller discharge port after roller drying, and therefrom sample
200g, moisture in cut tobacco balance after with quartering by sample pipe tobacco be divided into 10 groups, every group of 15g.Use above-mentioned pipe tobacco resist processing
Characterizing method rejects pipe tobacco width and is less than 0.6mm, and length range is greater than the pipe tobacco of equal ± 3 б of length of number, counts every batch of sample
Equal length L before the roller drying of pipe tobacco0c, the equal length L of number after roller drying0d, pipe tobacco resist processing it is as shown in table 3.
3 pipe tobacco wind of table send process resist processing characterization result
Similarly for the batch pipe tobacco, 200g is therefrom sampled, be divided into 10 groups for pipe tobacco is sampled with quartering after moisture in cut tobacco balance,
Every group of 15g；The batch sample pipe tobacco collects all tobacco sample in roller discharge outlet after roller drying, and therefrom sample
200g, moisture in cut tobacco balance after with quartering by sample pipe tobacco be divided into 10 groups, every group of 15g.Pipe tobacco is measured using pipe tobacco sieve method
Degree of crushing, obtains that the results are shown in Table 4.
4 pipe tobacco roller drying process degree of crushing sieve method characterization result of table
Degrading resistance property of the pipe tobacco through roller drying process reduces with the increase of sample pipe tobacco length, and this point is obtained with sieve method
The conclusion arrived is consistent.
In conclusion the invention establishes a kind of characterizing method of pipe tobacco resist processing based on image method, pipe tobacco is resistance to be added
Work S shows that degree of crushing of the pipe tobacco after processing is smaller, the resist processing of pipe tobacco is stronger closer to 1；Similarly S is smaller
In 1, show that pipe tobacco resist processing is weaker.It can be obtained in combination with example 1 and example 2, pipe tobacco resist processing is with pipe tobacco feature ruler
Very little increase and reduce, and to pass through journey broken bigger than making of generating of roller processing for pipe tobacco wind.It is resistance in pipe tobacco process for improving
The detection efficiency of processability instructs the index of pipe tobacco process technique to improve, reinforce cigarette quality integrated control have it is important
Meaning.
Claims (2)
1. a kind of pipe tobacco resist processing based on image method detects characterizing method, it is characterised in that: pipe tobacco wind can be respectively used to and sent
Characterization is detected with the pipe tobacco resist processing type of two kinds of processes of roller drying, with pipe tobacco wind is sent, number is long before and after roller drying process
Degree changes to characterize the resist processing of pipe tobacco, the specific steps are as follows:
Pipe tobacco wind send process:
(1.1) in air conveying device entrance, take pipe tobacco 100g ~ 800g, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；
(1.2) tobacco sample 8g ~ 20g after quartering water intaking balance-dividing is used for multiple times；
(1.3) it in the discrete sample clamping panel for being laid in detection system of tobacco sample, will guarantee that panel is paved with and pipe tobacco is without weight
It is folded；
(1.4) sample clamping panel, which is put into the imaging viewing field of detection system, is detected, and imaging system carries out image automatically and obtains
It takes；
(1.5) image got is handled using image segmentation algorithm by the image processing system in computer, is mentioned
Pipe tobacco skeleton after taking imaging:
(1.6) it is promoted as unit of pixel from pipe tobacco one end to the other end, successively by order phase in the long side of skeleton image two sides
Corresponding pixel connects and identifies that the intermediary image vegetarian refreshments for orienting this connecting line, these intermediary image vegetarian refreshments are combined into one
Pipe tobacco shape feature line, width are 1 pixel, and length is n >=5 pixel, and the characteristic curve of n≤4 pixel is considered
Pipe tobacco is made broken, does not detect, the length of the line is pipe tobacco length L；
(1.7) the equal length L of number of tobacco sample before wind is sent is sought as the following formula0a:
(1-1)
In above formula, N is test sample pipe tobacco sum, LiFor the length of i-th pipe tobacco；
(1.8) air conveying device export, take pipe tobacco 100g ~ 800g, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；
(1.9) step (1.2) ~ (1.7) are repeated, the equal length of number of tobacco sample after roller processing is obtained:
(1-2)
In above formula, M is test sample pipe tobacco sum, LjFor the length of jth root pipe tobacco；
(1.10) pipe tobacco resist processing is calculated using following formula:
(1-3)
Wherein: SWindThe resist processing of journey, no unit are passed through by wind for pipe tobacco；L0a、L0bRespectively pipe tobacco by wind pass through Cheng Qian,
The equal length of pipe tobacco number afterwards, unit mm；
Roller drying process:
(2.1) before roller drying, 50 ~ 1000g of pipe tobacco is taken, and balance to moisture content is 11% ~ 13% under constant-temperature constant-humidity environment；
(2.2) (1.2) ~ (1.7) in step (1) are repeated, pipe tobacco sampling amount is changed to 5g ~ 30g after balance, before obtaining roller drying
The equal length of pipe tobacco number:
(1-4)
In above formula, P is test sample pipe tobacco sum, LkFor the length of kth root pipe tobacco；
(2.3) after roller drying, take 50 ~ 1000g of pipe tobacco, and under constant-temperature constant-humidity environment balance to moisture content be 11% ~
13%；；
(2.4) (1.2) ~ (1.7) in step (1) are repeated, pipe tobacco sampling amount is changed to 5g ~ 30g after balance, obtains through roller drying
Pipe tobacco length afterwards:
(1-5)
In above formula, R is test sample pipe tobacco sum, LtFor the length of t root pipe tobacco；
(2.5) roller drying process pipe tobacco resist processing is calculated using following formula:
(1-6)
Wherein: SRollerPass through the resist processing of roller processing, no unit for pipe tobacco；L0c、L0dRespectively pipe tobacco is through roller drying process
Forward and backward pipe tobacco average length, unit mm.
2. the pipe tobacco resist processing according to claim 1 based on image method detects characterizing method, it is characterised in that: described
Imaging system is CCD camera.
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| CN114199755A (en) * | 2021-12-09 | 2022-03-18 | 浙江中烟工业有限责任公司 | Cut tobacco material detection system and processing-resistant characteristic analysis method |
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